1 files changed, 54 insertions, 0 deletions

diff --git a/SD-VBS/common/c/fiConv2.c b/SD-VBS/common/c/fiConv2.c
new file mode 100644
index 0000000..87fc4ec
--- /dev/null
+++ b/SD-VBS/common/c/fiConv2.c
@@ -0,0 +1,54 @@
+/********************************
+Author: Sravanthi Kota Venkata
+********************************/
+
+#include "sdvbs_common.h"
+
+F2D* fiConv2(I2D* a, F2D* b)
+{
+    F2D *c;
+    F2D *out;
+    int ma, na, mb, nb, ci, cj, i, j, m, n;
+    int r_index, c_index;
+
+    ma = a->height;
+    na = a->width;
+
+    mb = b->height;
+    nb = b->width;
+    
+    r_index = ceil((mb + 1.0)/2.0);
+    c_index = ceil((nb + 1.0)/2.0);
+
+    ci = ma+mb-1;
+    cj = na+nb-1;
+
+    c = fSetArray(ci, cj, 0);
+
+    for(i=0; i<ci; i++)
+    {
+        for(j=0; j<cj; j++)
+        {
+            for(m=0; m<ma; m++)
+            {
+                for(n=0; n<na; n++)
+                {
+                    if( (i-m)>=0 && (j-n)>=0 && (i-m)<mb && (j-n)<nb )
+                        subsref(c,i,j) += subsref(a,m,n) * subsref(b,(i-m),(j-n));
+                }
+            }
+
+        }
+    }
+
+    out = fMallocHandle(ma, na);
+    for(i=0; i<ma; i++)
+    {
+        for(j=0; j<na; j++)
+        {
+            subsref(out,i,j) = subsref(c,(i+r_index-1),(j+c_index-1));
+        }
+    }
+
+    return out;
+}